I also found another page on help.sap.com that says type H. So I’m going with type H

5.In the Corresponding Integ. Server field, enter an HTTP destination (pointing to the corresponding Integration Server) with the following syntax: dest://<HTTPDESTINATION>.You have to create this HTTP destination in transaction SM59 as a destination of type H. You can maintain all the settings that transaction SM59 offers, namely HTTP, HTTPS, user, and password.More information: